Well I guess if u looked at Dubs miningskills, the gear he uses and the amount of bombs he droppes with big amps Id say his chances of hitting the big & deep stuff is above the majority of the players level..so favourism or skilled & dedicated..your choice?
I'm fully aware he has some 'nice' stuff to play with - and that he actually uses it. And i'm aware that increases his chances to hit something 'big & deep'. You know, it wasnt me who said MA is favouring some above others. I rather think it's just random, and skills&equipment are modifiers on the size of your find/loot/whatsoever.
I dont have problems with Dub getting an ATH, if i would have any problems, it is with people getting an ATH where many others get 50% return - but that's the system and we gotta live with it i think.