Besty did say that mate.
My first job was near where he had his clothes boutique in Manchester, just off Deansgate, and one evening while waiting for my bus home, I wandered over to speak to him - he was sat on the doorstep and always had time to chat - and I asked him about the toughest team he played against.
I fully expected him to say Don Revie's Leeds, but he didn't, he reckoned Everton were right up there as the toughest opponents, not dirty (that surely would have been Leeds), just robust in the tackle and hard to break down. He mentioned (glowingly) the Holy Trinity and TW as one of the very best/toughest opponents he had to face.
Much as I always hated Manu, I could never hate Besty or Denis Law - unbelievable footballers both.