you might be the only person I have ever heard say that. The B52 Surf wake by all accounts, is superior especially with the 2018, it surfs amazing right from the factory with literally zero messing around. The fit and finish isn't even close. MB is head and shoulders in terms of interior looks and quality. One visit to the MB boat owners site and you can find tons of pics and videos of amazing MB wakes. On here I haven't seen more than 1 or two that make me think the S238 can hold candle to either the Tomcat or the B52.
The things I have observed that I like better on the Supreme are, the interior is deeper, noticeably which is odd because it looks to have significantly less free board than either the tomcat or the B52. The S238 also seems to have more room than the B52. The S238 looks better sitting in the water.
I'm not a fan of either dashboard, but I hate the MB less. The S238 looks like someone stuffed some gauges in a nylon backpack and shoved it up against the windshield.
My local dealer assures me its a surf monster and I like it enough to demo it before I make a move on my next boat but the marginal interior, the lack of free board and the absence of verifiable big surf waves definitely has me leaning MB... for now.