I suspect this is the 6 wheel ‘N’ scale switcher offered by Atlas back in the late 60’s. They do not run very well, and are sort of ‘dime a dozen’ at train shows. I think the Bachmann model may be different. The MTD usually is a 4 wheel engine, and the WTD appears to be a 6 wheel model(usually 30-40 tons). As far as DCC, I suppose you can find an ‘expensive’ mircro-decoder, but it will cost more than the engine, and the engine will not run any better.
The Bachmann one is different, I had one of those, it’s a 4-wheel MDT model. I also had the AHM HO scale version- those will give an AThearn RDC a run for its money in the top speed department, and even lean off the rails on curves at speed like an old Lionel die-cast loco, except the AHM loco will drop back on the rails as soon as the inside wheels lift and contact is lost.
My Bachmann N scale loco was by best runnign N scale loco - this prior to the availablility of the Atlas/Kato Alcos, so that might not be saying much, but even without traction tires it was able to haul a couple fo cars up my super-steep mine branch. I suspect the Atlas one should be perhaps of a bit better quality.