OK, i came to the conclusion that they don't have any real good ESC

We can pay $300.00 or $500.00 for an ESC and that's not a proof that the ESC will be better than a cheap $100.00 one.
My friend have run a brushless LST2 with a Nemesis Blue and a MM on 4s, all summer long, without any trouble...... And the LST2 is way heavier than the Maxx or revo!!!