Each to their own opinion.
F1 is a good game but it has no direct competition either, Sony own the F1 license. It's not as good a racing game as Forza in terms of track racing, however it's a good laugh on line and for me, the best exclusive between consoles.
Resistance is just not very good in Single Player. I've mentioned why several times, so I won't bother again.
Oblivion is a good game, but it's on the Xbox360 as well, so I couldn't count that as a great game one way or the other (in favour of 360, because it's pointless).
As you say though, it's all a matter of opinion.