OK, it's not that cut and dry.....The majority of the XBONEX BC library, you can play said games elsewhere or better..... Playstation has a huge list of hits across four consoles from both third and first party alike.......If you really want to play old games, would you want to play Oblivion or Rainbow Six Vegas on console, would you want to play Quake 3 PS2 edition when the PC versions exist? The real hook for BC is exclusivity, it's still the hook that gives such a feature value on consoles, just like exclusivity gave PS4 such value..... In essence, you can't compare 4 generations of great PS-1234 games and exclusives to XBOX BC.
Where else can I play Vagrant Story, Chrono Cross, Brave Fencer Musashi, Omega Boost, Pandemonium, Valkyrie Profile Silmeria, Shadow Hearts Covenant, Rule of Rose, Rygar, and thousands of others across 4 world leading console boxes, it just can't be beat, so I can understand why people are more stoked for PS BC..... As for me, I'll be playing PS5 games day 1 on PS5......Yet, if Sony delivers here, going back to entire catalogs of consoles is really unprecedented..... This is not drip feed BC in the slightest.....