Why Do Sony Fanboys Have A Problem with Final Fantasy XIII (13) and Metal Gear Solid: Rising Being Multiplat?

I heard them complain last year, and now this year too. Its like one game should only be on one system to have great quality. That is dumb thinking. When people talk about these games on 360 they say its going to need 13 or 15 discs, this is an exaggeration, a single layer blu ray disc holds 25GBs of data, a dvd holds 8 or 9GBs of data on a dual layer disc, it would require 3-4 discs for a game that on bluray is single layer if it uses all that data. For dual layer which is 50GBs I believe about 5-6 discs. I hear fanboys complain or mock about it (final fantasy) having to be on multiple discs, but Final Fantasy VI (7) was on 3 discs, VII (8) was on 4 and IX (9) was on 4 on the original playstation. Now I am not an Xbox Fanboy (Xbot), because I love both, but I prefer the 360 but the point is for both upcoming titles people are complaining. We have not even seen in game footage or any footage of Rising. I understand Xbots brag about these titles, but there is no need for either side to brag or complain about either, because they are not exclusive to either side. So my final question is Why Do Sony Fanboys Have A Problem with Final Fantasy XIII (13) and Metal Gear Solid: Rising Being Multiplat? Also Why Do Xbots Brag About It???