As long as they are still on full life, yes. Balanced teams usually cant afford to keep 1 part of their defensive core on the sidelines for one specific threat so there is a good chance your Zapdos/Rotom-W (especially the latter who lacks recovery) will be damaged when switching into Pinsir and that might be just enough for him to lose.
While I agree that Rotom-W is easy to whittle, Zapdos finds it easy to remain above 70% hp at all times. This means Zapdos is often used for pivoting as well, due to useful resistances, solid defenses and powerful attacks, as well as reliable recovery. Well, I probably shouldn't list his shit like that, but yeah. He's a useful pivot due to his reliable recovery, meaning that even if he switches in and out, it's simple to just recover up any damage afterwards.
With 65/120/90 defenses there is no luck involved. And what if the Pinsir player just decides to attack instead of boosting while you switch your Revenger in? Right he takes ~70% dmg and can be picked of with quick attack the next time. Your other choice is to let a mon die any time Pinsir switches in which isnt very beneficial either. The only solid and reliable way to handle Pinsir is Skarm, everything else can work but there is still a significant chance that Pinsir sweeps your team.
See, whenever I use Pinsir, that's pretty much all I get to do. Attacking straight away. I weaken a mon, yes, but I never get a shot at SDing up later on. Seriously, I've not used SD once without ending up dying that turn, dying next turn or get forced out the next turn. Perhaps I don't know how to "use" him, or perhaps I face off against teams that are overprepared for him. I don't know, I just never get to do anything else than attacking.
See, there's absolutely no need for a pokemon to have counters to make it unmanageable. In Pinsir's case, it's his sheer amount of checks that put him in a problematic position. I personally feel that he suffers from the same issue that Hydreigon did last gen in being a great lack of counters, but is still manageable. He's dangerous when he gets going, but he simply cannot switch in and out as well as, despite having pretty good bulk stat-wise, he's still got a horrible typing. He's weak to all of the most common offensive typings/moves. So unlike Zard Y, which shares his rock weakness after mega, he does not have that many useful resistances aside from Fighting (which is less common this gen anyways). Oh and a ground immunity, but he's never able to utilize that well.
To put it simple, his issues include many checks, hard to switch in and bad typing. If he gets going, he's dangerous, but so is Mega Ttar or Mega Gyarados or SubSD Terrak or BU Talons or whatever. And those have many more setup chances than Pinsir. Now, I'm not saying it's not dangerous, I just find it horribly over exaggerated.