Pre-pandemic, when I compared Disney building to Universal building using site (de)construction as the starting point. Universal was faster, but, not by much. And there were several projects Disney built as quickly as Uni. But, people often exaggerated the difference.
The Potter lands were each 2.5 years. Pandora was 3.5 years. But several people on these forums kept saying that Potter took 2 years and Pandora took 4 years, changing the one year difference to two years.
I regard any type of measure or comparison that took place over the pandemic as unhelpful. If one company wants to forge ahead with construction while the other decides to halt, how do you then compare 'build times' between them? Despite scoffs and calls to "just pay more!" there was indeed a labor and supply shortage.
Any comparisons in the past three years is, in my considered opinion, useless.
We've seen Disney drag its feet on several projects and then suddenly accelerate them. Rather than concluding that Disney is just slow in building, a better reason would be that decisions to halt or forge ahead were made on cash balances and projected earnings, especially considering Disney just had two of their world parks shut down again.
Oh, BTW, WRT TRON... as a sign of the flying by the seat of the pants, WDW originally had TRON in one place in their first permit, and then moved it in their second permit.