I don’t think you would notice any difference.
It might be a bit larger so it would sit further from the corner meaning slightly less rigid.
But if it doesn’t it might be heavier so slower accelerations.
Having a speed control is nice, but if we ever get a inexpensive PID up and running, moot point.
Bottom line, Sorry I havn’t tried it. If the dewalt is cheaper, I see no reason to switch, it plows right through aluminum. Shouldn’t be a torque deficiency, we have pretty much maxed out our rails more than anything else. I have never looked for a strong spindle for any reason.
If you want to go faster build it smaller.