george182 I was explaining why forretress isn't a "stallbreaker" referring to the above posts in this thread. the way that forretress aim is not damaging anything is the way of why half of the tier can set up on it and therefore making you switch a lot with it. mantaining pressure on forretress is not difficult because most of the time you're bringing forretress rocks are already on your field and you'll be constantly taking hits, which is why it gets worn down easily unlike skarmory and starmie, both of which have a reliable recovery move.
sure forretress can also set up spikes on many stall mons like you said, but that will create the same scenarios as when you bring in forry. you spike, i go to my spinner, you go to rotom to block it or try to damage it with forretress (starmie) doing pitiful damage against defensive versions and all that. not to even mention that if your only way to deal with forre in a stall team is your own rotom then the stall team will kind of suck. there's crobat, heatran, taunt skarmory... there are many ways to make forry become not troublesome
and that's basically why it's inferior to skarm and starmie, it isn't bad, but they end up being more useful in the stall game, which remains back to my point: forry should be A-