Reading the metagame shifts there's a repeated comment that Rhydon's buff makes him the first real counter to Snorlax and claims that he's the first pokemon able to 1v1 Snorlax without dodging.
Don't get me wrong - Rhydon received a huge buff. I just don't think either statement is true though.
First, let's look at the Rhydon 1v1 Snorlax without dodging scenario:
Rhydon may resist BS and HB, but doesn't resist ZH. Further, he's weak to EQ. The best Rhydon (MS/EQ) versus his worst Snorlax matchup (ZH/EQ) is probably a close fight without dodging that I would give to the Snorlax in a PvP.
Now, if we're talking about a defending Snorlax then sure. Rhydon might win. However lots of other pokemon won in these cases as well. Definitely Vaporeon (I beat higher level Snorlax many times before I started dodging), I'd guess Dragonite (I always assumed the top 3 were like rock-paper-scissors with Dragonite/Lapras/Snorlax), with Exeggutor (resists ZH) and probably Arcanine as well. Maybe a Snorlax with HB could win these 1v1s but we're seriously assuming you can't dodge Hyperbeam? 0.7sec dodge window when dodges have a 0.5sec cooldown and can be pre-loaded, and you get over 3 seconds notice? When I was first learning to properly dodge I just started swiping frantically when Hyperbeam came up and never failed to dodge it...
Rhydon's buff is good for the game (especially since players can compete more on the gym scene) but with his double weakness to grass/water he's still not going to be a threat in battle. When attacking he'll be more useful but with the huge grass nerfs we'll probably be seeing way more waters in the gyms than before.