I'm not a 1's player by any margin (fuck, I just did my 2's build because I had no idea how to do a 1's build), but shit like sitting shock troops at max range, charging into your own flame barrages, and sitting mortars next to sturm pios is fairly obviously dumb.
The thing is you microed better than he did even if you chose the easy way by blobbing. These guys are accusing you of blobbing when probably they are doing it all the time as 80% of player base . He would have blobbed you with his cons too, if he had the chance, make no mistake.
That being said that doesn't mean he can't beat you, I'm sure he can if he won't do those mistakes again (but let's be fair and admit that many micro mistakes are due to the fact that game is still laggy and not properly optimized, RELIC), the idea is that you cached him off guard, because he made the mistake of underestimating you, assuming that different opinion means no game knowledge.
And the game's outcome would have been different if he was a little more lucky with that base attack, Jagdtiger doesn't excell in close fights. But, again, he was able to build 2 IS2s and 2 KV8s even if you dominated the game compared to your single Panther and Jagdtiger that arrived just in time, not a moment to soon, though he had these vehicles for sometime before the attack.
See where the problem is? I wouldn't call OKW OP. Not at all.