Yes it is. Even though I think Tennosuke translates out as"jelly angel", Viz gave him the name Jelly Jiggler and Phuz kept the name in the dub (why they dispute over Don Patch/Poppa Rocks' name, I'll never know). Personally, I perfer Tennosuke since there's less syllables than Jelly Jiggler.
Eh? Don't they have the same number of syllables?
Ten-no-su-ke (4)
Jel-ly Jig-gler (4)
And if you take their "full names" it still seems the same, To-ko-ro and Gen-er-al. Or am I pronouncing these wrong?