Probably like a smaller and significantly lesser version of James Toney. In other words, more than good enough for the era, especially in short bouts.
He was fat but apparently had skills. He fought 4 round bouts so he could slap his way to winning a few rounds for a victory or a draw. He defeated Jack Dempsey in a 4 rounder. He fought EVERYBODY:. Dempsey, Greb, Fulton, Gunboat Smith, he fought AND DEFEATED SAM LANGFORD FFS,Tommy Gibbons, Bill Brennan. His resume SHINES as compared to Tyson Fury, another "Fat Boy". Here's what Boxrec has to say about his second bout with Greb; a rare 10 rounder: "Greb won nine rounds." (Sandusky Register) The Pittsburgh Post said that Greb entered the ring with a black eye and two boils, yet won 9 of 10 rounds. Meehan won only the 9th, when Greb appeared to coast. Greb's best rounds were the 1st, 2nd, 4th, 8th, and 10th, all of which he won very decisively. The other rounds were close. Meehan proved to be quite mobile despite his fat mid-section. He threw a lot of leather and "hit Greb aplenty, " but never hit hard enough to back Harry up. Greb almost disregarded Meehan's punches and threw his usual blizzard of leather. At time he had Meehan all at sea and won by plenty but Willie was never in danger of being stopped.
Good enough to beat; Dempsey Langford Clark Dillon Mantell His forte was 4 and 6 rounders. An early day Butter Bean fighting much better opposition.