Gary
Can be abrasive at times (no joke)
I also support Sawsbuck for either B- or B rank. Although it's bulk is rather lackluster, and it's heavily damaged by most forms of priority, Sawsbuck really doesn't need to setup most of the time. As Halcyon mentioned, Sawsbuck has the capability of OHKOing Offensive Latias after Stealth Rock, which is absolutely HUGE for sun teams, seeing as she's very well known for her ability to check a lot of things on sun. On top of that, Nature Power can KO Heatran, THE worst Pokemon that sun has to deal with, and is often why sun teams forgo an entire team slot for Dugtrio. When I've used Sawsbuck, I don't really use it as a sweeper. I use it more as a revenge killer then anything else, because that's what it is; suns best revenge killer. And man if you let it boost up to +2, you're fucked. There's very little that can properly wall Sawsbuck, and unlike Venusaur, it functions as more of a revenge killer that is instantly threatening the moment you send in out into the field. It's insanely fast, powerful, and can sweep PREPARED teams easily with little effort. It may not be as effective as Venusuar in the sweeping department, but it's niche on sun teams as an incredible revenge killer is more than enough of a reason to bump it up to B- or B Rank. It's not a niche Pokemon like 75% of C-rank, it's a really good sun Pokemon that is REALLY overlooked.