So, you compare two games in detail, both of which happen to be better on the 360. This demonstrates nothing apart from the fact that those two devs are better with the 360 than they are with the PS3. All this really reveals to me is your bias: why didn't you compare the versions of, say, COD4 or Burnout Paradise?
And of course, even comparing multiplatform titles in the first place really isn't the best way to compare the comparative strength of the two consoles, as the different strengths and weaknesses of each console are different, meaning sacrifices have to be made in most multiplatform titles. Because of this, multiplatform titles don't represent the best of what a console can do.
Of course, all of this is meaningless as you've redefined the strength of the console to incorporate how easy it is to program for, putting the PS3 at an immediate disadvantage. Of course, this also means that the Wii’s technology is superior to the PS3’s in some respects too, if you carry the logic over.
The problem with including ease of development in your assessment is that this value fluctuates, from dev to dev and over time. Insomniac, for example, don't appear to have any trouble developing games for the PS3, whereas some other devs do. And we've seen how devs have been getting better at using the PS3 (just compare the quality of multiplatform titles at the beginning of its life to now). Because this isn't a definite, in-the-stone number - like something like RAM is - you can't really include it in your assessment. After all, a year or two down the line and we may find that devs find developing for the PS3 just as easy as developing for the 360.
No, the best way to figure out which console is strongest is to compare exclusive games, as they'll present the best of what the console is capable of. But as you quite rightly pointed out, that is very hard to currently do. There isn't a big enough difference in the quality of the exclusive games, making it very hard to judge, especially against the backdrop of different art styles.
In the end, you’ve demonstrated nothing.
