The visuals and details and everything were great, but oddly, I've always excelled with Robin on FD. (I have a rough 70% win rate as of now)
It's understandable that platforms help mix up recoveries and such, but the lack of it has never been a problem with me and Robin. Robin doesn't take slightly missing the ledge-sweetspot nearly as hard as Lucario if he misses with and underledge, and FD ledge game never really has been a problem.
(This is a personal opinion) but I actually hate battlefield. Sure the platforms add a little more dynamic but I often find them relatively more annoying than useful. My play with Robin on FD takes advantage of its offensive properties. The lack of platforms give the enemy fewer options as well, and while I admit I haven't experimented much with her on Battlefield, I've never had problems with FD's lack of platforms.
I'm just about to publish an extremely long treatise on all the things I've learned over the past 1000-ish victories I've had with Robin, but given we clearly have extremely different playstyles, it'd be cool to share tips.
Very interesting stuff though, great work.