The actual rom has 2 worlds, not 1. Should the speedruns therefore not count?

How do you know the 2 worlds version is "more accurate"?

Sorry for the necro, here's the IPS patch of the version with 2 Worlds rather than 1.

https://cdn.discordapp.com/attachments/964249054714404884/1070471816906285123/Super_Mario_Bros_Frustration_2_Worlds.ips