>>31785934Hardly anyone actually uses burn up on arcanine. It's inconsistent to use, and isn't something anyone would want on a moveslot as Arcanine's 4 move slot syndrome is bad enough already. The following stats are from the highest ELO players of the VGC 17 meta. Unless you mean to tell me that thousands of the top players are somehow "wrong", burn up is not a viable gimmick.
Moves
Protect 67.499%
Flare Blitz 64.564%
Extreme Speed 56.598%
Snarl 47.260%
Wild Charge 38.133%
Will-O-Wisp 28.823%
Flamethrower 28.109%
Close Combat 18.678%
Roar 15.990%
Helping Hand 12.729%
Burn Up 6.461%
Other 15.157%
http://www.smogon.com/stats/2017-01/moveset/gen7vgc2017-1760.txtIf you want to use burn up you'll have to actually use it on an enemy, and I presume they can't be using protect (secondary effects don't happen in general when hitting into a protect, I assume the same follows for burn up), then not switch out unless you want to set up all over again, meaning you can't cycle intimidates. Also, any sort of """viable""" burn up set kind of defeats the general purpose of arcanine, which is to be bulky support with a good offensive presence.
Also, losing the fire typing isn't necessarily a good thing, as fire has 6 resistances.