Consistency wins the league more often than simply defining who has the most quality. It's arguable who has the most quality within our top teams, but it is obvious who was the most consistent last season. Arsenal and City have lots of quality up front, but are still inconsistent when it comes to getting results. We are ahead of them both so far on merit, so even if you believe their quality is superior, it has to be noted that their respective inconsistency has negated that extra quality, and has still left them currently behind us in the league. As you suggest that could change as the season progresses, but based upon what we have seen so far it could just as easily not. Ronaldo would add goals to our team, -which is currently our main weakness- so i think it's reasonable to suggest our general level of consistency would only be improved by Ronaldo adding significantly to our goal threat.