But honestly I play both a ton, and it depends on what you’re looking for in a game.
BBCS: More masher friendly at low levels of play and you can do cool shit much easier, but getting to a high level of play takes a LOT more work than SSF4 IMO. Spacing and footsies are so much more complex due to all the movement options and the faster pace of the game, and combos in general are harder to execute usually if we’re referring to high damage combos.
SSF4: Very easy to pick up as well, but you can’t just hit buttons and succeed like in BBCS, because you can’t just link pretty much every move together and have them connect as a combo or at least a “combo” (connects but the other person COULD have prevented it). There are more annoying noob tactics in SSF4 that are harder to counter with worthwhile damage for a beginner than noob tactics in BBCS are. However, there’s a lot less execution required to succeed.
In the long run, I’d say SSF4 is the best bet for a FG noob, because provided you can get over wanting to sink to the levels of noobs and just mash SRK all day, and you actually stick to Endless and offline play and try to learn fundamentals, you will be able to learn very good fundamentals from SSF4 and they will help carry over into other games.