Well the puppet designs are quite different, perhaps it's the voice and the character being a human sized pig perhaps is the coincidence. As a royal viewer of Muppets Tonight back in the 90s, I didn't get a chance to see the UK spots so the only time I seen Howard Tubman was in It's a Very Merry Muppet Christmas Movie. When I re-watched that, it kind of made me wonder, why does that character remind me of Tinseltown?
By the way, what happened with Tinseltown? I've seen the pilot and I thought it was quite funny. I love how their adopted son comes in and gets something from the refrigerator completely ignoring their parents. I'm not sure why that's funny, kind of campy to me I guess. Plus I'm so used to seeing a puppet in a human family either Alf or Cousin Skeeter, so to see a human having puppet parents it's very original. So does The Jim Henson Company still own rights to Tinseltown or does Logo / Viacom own them now? I really wished that was a show, that looked very good.