i definitely support Analytic's nom of regular metagross to B. simply put, AV regular metagross is a godsend for offensive builds. you kinda almost need a steel to handle things like latis, fairies, etc., and having AV gross as a viable option is huge. other than gross, your other "bulky" offensive steels are AV bisharp, jirachi, scizor, heatran, mega metagross, and mega scizor. i'm pretty sure these aren't all the bulky offensive steels, but let's just go through this little list:
- AV bisharp isn't really that great, and non-AV bisharp sets usually don't have the bulk to contend with other pokemon on this list.
- if you're gonna be running jirachi on offense, it's gonna be scarf most of the time; while scarf jirachi is pretty good at handling the things a steel needs to handle on offense while providing utility, it's pretty underwhelming offensively, and it's really easy to be forced into tough situations with it. being choice-locked + having ample switch-ins due to sub-par offenses makes it really easy to give your opponent the upper hand.
- imo if regular scizor is B rank, meta should be as well. gross isn't as powerful (CB) / doesn't have the capability to be as powerful (SD), but it's superior in the bulk department.
- offensive heatran still has a great amount of bulk, and it can provide nice utility for offensive builds with things like magma storm and/or taunt to stallbreak, and stealth rock to set rocks lol. however, it doesn't put as much pressure on latis & other psychic types as some of these other pokemon do.
- mega metagross and mega scizor take up mega slots, so you aren't really going to them as your first choice unless you have that mega slot open...
i don't think mega aggron is that great by any means, but when looking at the other C- and C rank pokemon (mainly the other megas), i think it's more on par with the mega absol and mega bannete (the C+ megas) than it is with mega camerupt (the C- mega). i get what bludz was saying about that probably just being an indication that absol and bannette should drop rather than aggron rising, and i do also agree that the lower viability rankings could use a bit of cleaning up. however, in my opinion, mega aggron stands out a lot more than the other C- pokemon. mega camerupt and roserade are pretty bad, cloyster, froslass, nidoqueen, and shaymin are quite niche, and zygarde, forretress, and cresselia are a little less niche than those (in my opinion). while mega aggron isn't really good at all, and it's also pretty niche, it isn't as bad as those other bad C- ranks, and it's easier to throw on teams than those niche / super niche ones.
Albacore already did a great job of making mega aggron's case for C rank, but it's really as simple as the thing being insanely fat but not weak by any means. it's true that i'm gonna want to go for mega scizor or skarmory or whatever > aggron 99% of the time, but when you look at the other C- and C rank pokemon, it's tough to say aggron belongs where it is. mega aggron for C. n_n