I'd agree that some Ibanez guitars of the era were technically better built and might have played better. The golden age of Ibanez mid/late 70's-early 80's had them securing/buying the best woods in the world while companies like Gibson/Fender were cutting costs...and quality control.
Wood and general hardware wise their top of the line could compete with most anyone while their mid-range and lower line benefited from great quality control/setups and the same hardware as their TOL.
That consistency helped them garner a reputation of "better" IMHO. In general, I've owned over 100 vintage Ibanez guitars...mostly right handed. Any Gibson set up and built properly seemed to always sound just that much better. I'm no snob, but I am a realist.[/QUOTE
I've had 3 Gibson Les Paul's over the years. Probably 8 Ibanez Artists, AR50BK AR100NT, 2618's, 2619's, 2622, I have a 2405 Custom Agent, 2351 Les Paul, and my current LP Style player is a 1977 2651 Ibanez, set neck. I own zero Gibson Les Paul's, I couldn't bond with them, all of the Ibanez guitars were better for me. I agree build quality between the Ibby and Gibson of that era are pretty equal. I've come to the conclusion, I like Ibanez necks. It must be the necks. Regardless, they're both excellent guitars no doubt. You can still grab a super nice late 70's Ibanez Artist in very good condition for $1,500. What a deal! Funny side note, I have a 1982 Gibson Sonex Deluxe that I love.