>>29417716The biggest factor is that stall as a dedicated team build is viable in singles, the other is that Smogon bans (or at least tries to) according to a mon's actual dominance in a given meta, rather than according to availability and BST. Otherwise, VGC 2016 (and gen6 in general, thanks to Megas and Primals) caused team building to be a top-down process; you had one or two slots for mons which far outmatched the rest of the meta, so finding the mons to complement them (and playing them in actual matches) was based on two simple factors: if said mon was able to reliably survive a hit from one of the big guns, and whether it could reliably set the playing field in a way that would allow the centrepiece of the team to smash into the opposing threats. VGC '16 was particularly bad about this, as the raw power disparity between the weather trio, Xern and Yveltal to the rest meant a very offensive meta where games were quite often won or lost on turn one; there were three and a half viable megas, and hardly any support mon could threaten the restricted mons (with several exceptions such as HP water meme sets like Meowstic).
Otherwise, doubles, or VGC in particular, isn't inherently more restrictive than Smogon singles; some mons are more viable in singles and vice-versa. So, on one hand, bringing all 6 mons to a battle means each one is not as critical, allowing more specialisation in roles; on the other hand, choosing 4 out of 6 allows to use mons with specific matchup problems. And while you don't see purely stall mons (unless cheesing the chess clock becomes a thing) or glass cannons in dubs (Weavile aside, and maybe also Greninja in elo hell), doubles inherently has more roles a mon can play, simply due to there being more elements involved on the board. That's why hybrid mons are a thing; bringing only 4 mons does force one to compress roles efficiently, but in theory it also allows for greater variance between mons who can do several things.
