Firstly, the list of clubs that might be capable of luring Spurs stars players away is tiny - even in terms of money you might wish to remember that Spurs will be in the global top 10 for income inside the next 2 years
Firstly you say top 10 like that's a huge achievement for a Premier League club. When Newcastle, Everton, West Ham, Leicester, Sunderland, Swansea, Stoke, Palace, West Brom & So'ton are going to be 13th - 22nd position minimum (save relegation) your 10th position isn't anything worth mentioning. You add into that the fact that a lot of those clubs are debt free whereas Spurs will have a large debt pile with big interest payments each year and it wouldn't be a big shock to see the aforementioned 10 clubs outbidding you on wages and transfer fee's. For instance I wouldn't be surprised to see one of your top targets in the Summer (someone like Berahino for example), ending up being offered a bigger salary and being outbid on the fee by West Ham.
Also, it's very good to hear you say that Spurs only need a couple of squad additions to stay competitive. With every club around you likely to significantly improve that'll be just what United, Chelsea, Arsenal & City want to hear.
, and that's before our new stadium complex comes on stream. And the list is even tinier still given that Levy will no longer sell to a Prem rival, although in any case your mention of Arsenal is a total non-starter.
The stadium will increase turnover, but ask Arsenal how long it took that to trickle through to increasing their transfer/wage budget. Hint: they singed Ozil 7 years after they moved to the Emirates. Arsenal being a club with a much larger turnover than Spurs to begin with. Again I'm not saying Kane moves to Arsenal; I'm saying Kane moves to Madrid and Benzema moves to Arsenal (as Ozil). There was no difference between you selling Bale to Arsenal and you selling Bale to Madrid who then sold Ozil to Arsenal - you are facilitating the move of a world class player to your rival either way.
You say that - inbetween Bale and Kane/Alii - our best players have been "mediocre". Again this is more nonsense: Lloris, Eriksen, Dier and Dembele (for example) are far from being mediocre.
The year after Bale left Eriksen had had one decent but unspectacular season at Spurs; Dembele was used often from the bench and was somewhat average and Dier was still at Sporting. Lloris also isn't the caliber of 'keeper a truly top team would be after - that'd be the likes of De Gea/Courtois. So you are inaccurate to imply that Spurs have had player's on their books that the top teams would be after over the past 3 years (until this Summer).
You say "we 10 points ahead having played 1 more game". Actually it's effectively 11 points ahead given our greatly superior GD. And if I were you I wouldn't count an additional 3 points for your game in hand until they actually materialise.
It isn't effectively 11 points as if we had another 11 points we'd be ahead of you in the table by 1 point. That's simple Maths.
You also say: "On what planet does this put Spurs ahead of United ...?" Answer: planet league table, by a significant margin.
I said on what planet is a potential FA Cup win and finishing 7 points behind being classed as a much worse season and a trend of one team becoming much worse and the other much better? Again I'm such most Spurs fans would prefer their first major trophy in 25 years vs seeing their team play 6-8 Champions League games before getting put in their place by a big team.
And great, you're in with a chance for the FA Cup - but personally for Spurs I wouldn't swap the certainty of CL football next season for that FA Cup chance, not least because of the effect CL football will have on our finances and helping to keep our squad intact, quite aside from the joy of actually playing in the CL.
Most fans tend to celebrate winning trophies, rather than a good set of financial accounts.
I've already explained why Spurs are batting above their weight - the Prem's lowest net spend figures over the last 5 years, the fact of 5 wealthier clubs in the Prem, the top 4 finishes, 2nd place most likely this time around .... these facts speak for themselves, regardless of your determination to dismiss it all.
I remember between 2005 and 2010 United having one of the lowest net spends in the League (I believe under £15m in 5 seasons). We won 4 League titles and 1 Champions League title during that period. That's batting above your weight. Playing in the Champions League once in 5 years (or twice in 6 years), merely taking advantage of others' disastrous seasons; whilst also winning no trophies whatsoever... Isn't. Unless you have very, very low standards.
The fact that you were 5 points ahead of us in 13/14 but then 6 points behind in 14/15 tends to suggest that even an 11 point swing isn't example abnormal.