The EB110 SS did 11.0 to 19.8 (Sport Auto), versus the Enzo which did 11.4 to 20.1. The 400-1000m gap between them is only 0.1sec. This implies that the Bugatti has a lower trap speed, either at the 400m mark or at the 1000m mark... maybe both.
I'd rather compare EB110 SS to F50. In real-world performance, that Ferrari is what the EB110 SS is closer to. Even the F512 M can beat an EB110 GT on several occasions, and that car rivals the LAMBORGHINI DIABLO which is far from a hypercar.
The US-spec EB110 (using the same motor as the SS model) produced a 12.5/119.5mph quartermile result, which equates to approximately 22.3 for the standing kilometer (by then it should trap 160 mph). Remember, the EB110 GT did 12.8/115 and 22.9/150.
Road & Track admitted to poor shifting skills in the EB110 SS, so at a 160mph finishing kilometer speed it should match the Jaguar XJ220. It's definitely faster than Jaguar XJ220 as well, judging by the poor quartermile trap speed. 120 to 160 is better than 125 to 160.
This was ONE of the VERY RARE moments when Road & Track DID NOT account for a 1-foot rollout... which they usually do, but judging by the poor 0-30 result of 2.2sec, in this case no rollout was accounted for their EB110. Even a naturally aspirated V6 or V8, 300hp upper-midsize sedan does 2.1 with rollout — I'm talking cars like the Chevy Impala and Toyota Camry.