I apologize. I thought this was for the all Super Mario World SNES games, including all "Super Mario World" Kaizo hacks. You're saying that run-ahead is not allowed for the original "Super Mario World" itself. Thank you for clarification.

There are several speedruns with run-ahead enabled that are approved on this site, these same speedruns also used the SNES-2010 core. My speedrun for Kroeti Kaizo has run-ahead approved just yesterday. Kamikaizo speedrun for Orcus has run-ahead. BennyKapow for GPW2 has run-ahead.

Run-ahead is no different than Zero latency mode in the SuperNT. BOTH change the timing at which things are drawn on-screen inorder to give the player a PERCEIVED better input latency. Neither change the speed at which the game runs outside of expected variations from original hardware.