Round 1: Dragon Ball to Dragon Ball Z Piccolo
Round 2: Dragon Ball Super Piccolo
Round 3: Dragon Ball Super: Super Hero Piccolo
Round 1: Dragon Ball to Dragon Ball Z Piccolo
Round 2: Dragon Ball Super Piccolo
Round 3: Dragon Ball Super: Super Hero Piccolo
If this is the Allen on the animated new show, I don't see him withstanding the energy outputs of #2 or 3, nor matching the speed. In the last episode the Viltrumites took him apart pretty easily.
Dragonball-era Piccolo wasn't any slouch in energy projection either, albeit it's rather all or nothing.
I'm not sure how we scale this period of Allen the Alien's speed. He's certainly in Invicible's ballpark I'd say, which may do decently for the Dragonball period, such that they're in a high level of blink-and-you'll-miss-it speed; Allen pulled even with Mark, who'd been playing catch with Omniman throwing the ball around the globe; and by the 23rd Budokai, Piccolo = Goku > Tenshinhan > Roshi, who along with Krillin have this silly sequence.