first off, tossing a queen from this deck is no different then not putting plus power in a shuppet donk deck. usually in this case you start off with queen because it can deal 40 at t1 or 100 dmg max at t2 (hench why alot of people are saying 3-4 RR, self included), anyways counter's for DGX. Some people on the forums have been saying drifblim UD is a good counter but I like mismagius SF and or PGX better, sure it doesn't let you shuffle DGX into your opponent's deck but what are the chances that your opponent is going to have DGX as an active if drifblim UD is out? answer: not likely, sure warp point can change the tables but by that time daichomp will most likely successfully try to tko your drifblim before it can be used (t2-t3 attacks alwasy suck that way), so that rule's in the option of a colorless gain, ie flareon. basically fire stands the best chance against DGX but a majority of meta deck's don't use fire but flareon UD/RR dosen't ask for specific energy for there first attack and at t1 deal's 30, with an ebelt is a tko for Dailga G, pluspower, tko DGX (all you need is 60-70). then again blaziken PT can donk with DCE and w/o ebelt so there's various counter's to DGX, even one's I haven't listed that can work in a deck like this. cya
P.S. nidoking's expression at the time was vacant, i think, or maybe he's got a soulless abyss, your pick.