This was just a random example used to argue that a lot of things are semi-interchangeable as the A and A- tiers currently stand (and the lack of A+)
It's main niche IMO is being able to be a secondary rain set up in rain teams (using a fast dance). Otherwise every rotom form outclasses it.
Gigalith B- it is good and strong but its main downside is that it indirectly competes with torkoal and abomasnow as a trick room weather inducer. (Both of which are ranked too low imo. Tork is B+ or A- and Aboma is at the very least B-)
I'd Bisharp B and I totally agree with Orange's arguments for that.
Rotom-H, Rotom-M, cofag, lili and bronzong are all too low (I'd place them B, A, B-, B and B+ respectivelly)
Arguments for some of those ^
lili: after you and sleep powder are amazing in a pokemon with clorophyll, grass gem leaf storm is very strong nuke, it also ignores amoongus' redirections and destroys blastoise.
bronzong is capable of single handedly dealing with sand teams, thus making it an amazing pokemon to use to patch weaknesses in teambuilding (similar to gengar) not to mention its trick room and screen capabilities