Eisner's theme park/resort highs were significantly higher than Iger's have been.
I'd even say 1986ish through 1998ish was WDW at its very peak in terms of expansion, creativity, and the overall quality of the guest experience.
Until recently, I would have given Iger credit purely on the business side for his acquisitions... but I'm now quite unconvinced that most of those acquisitions will ultimately prove to have been good for the company in the long run.