I think Victreebels placement at A- is deserved, it hits an amazing speed tier in the sun, which outpaces even a plenthy of scarfers, it has almost no resistet movepool options too. Its dangerous when u give it a chance to sweep when Sun is up. Solar beam, Sludge Bomb and Weather Ball...
Mega-Sceptile to me seems from 2 points too much for the RU tier:
First off all its speed tier, its speed tier is undoubtly excellent, 145 base speed lets it outpace the entire RU tier outside of certain scarfers, but even they have to hit a certain speed tier to outspeed it with Scarf...
Nothing I can add here, I have to agree on my Vincune, I should of chosen Crocune instead.
But since we are at it the best counters for sure are:
a bit iffy on Chesnaught, still Chesnaught is a nice counter, but you have to scout first that Maero is no Wing...
Break The Mold - Volt-Turn BO
Volt-Turn Bulky Offense with some Innovation in it; I started the teambuilding process with Mega Ampharos as it is a good Volt-Switch user, the Dual typing is pretty good
and its has good coverage option in Focus Blast to hit steel...
Zygarde 10% to A+
Zygarde 10% is still a fantastic mon but with the rise of checks after checks it isn't that successfuly anymore. Virizion tends to run Synthesis more often and is able to hardcheck Zygarde better (especially the CB set) as it tends to click T-Arrows more than any other move in...