Well this is going to change things. F2pool is about 12% of the hashrate which pushes segwit to 39% (+/- the regular variance). It also pushes BU from 37 to 49%. However segwit signalling counts towards software activation whereas BU flagging doesn't really activate anything directly - and will terrify BU miners that they're effectively a sybil attack along with bitclubnetwork's BU flagging. If BU flagging gets to 51% and antpool comes through with their threat of activating BU blocks but f2pool and bitclubnetwork are just flagging their blocks for trolling then in fact they'll end up activating with a minority since 14+% may not actually follow them.