It is. I personally think Burnley is the better Starman artist, but that's suitability of artist to character, not raw talent.
According to GCD, it was Pierce Rice on Manhunter with a Kirby script, and Louis Cazeneuve on Shining Knight. Both of who, while not as impressive as the rest of the creator list, are certainly better than a lot of GA artists. And the book, while obviously not very high grade, was cheap at the $70 with shipping I paid for it. (I would call it about a 1.5; and it's good for a 1.5 if that makes sense. Just the number or name grade makes it hard to tell what the book actually looks like that low; I've seen books accurately graded fair/good all over the place in terms of eye appeal and such.)
My current crazy goal is to complete at least a survey of Adventure, with at least one issue a year. No way I can afford a complete run, but I can at least get a nice sample. And lets be honest, other than the 8 Frazetta issues how many issues do you really need from 103-246 to get a feel for the book?