If you had the available physical disk expansions for PS2 (RoZ, CoP, ToAU, WotG), then yes, you'll have all your expansion content available on the PS2 even if you purchase the Abyssea Collection for PC. Abyssea is DLC on the PS2 and the codes will transfer across characters in between platforms.
However, if you're missing any of the disk based expansions for PS2, you will not be able to access the Abyssea DLC content on your PS2 as it requires all four disk expansions. You will only be able to play those on your PC edition.
____________________________ All jobs at level 99 Bard 4 Life Hanging out in the Ionosphere these days
::Finale II HNM
Daurdabla 85 completed 3-18-2013 *** Gjallarhorn 95
(Zelduh)'s won the argument by going so far off the deep end that no one is willing to follow.