S1 Pro vs Ather 450X on open highway, worth the switch?

Been doing more Pune Mumbai highway stretches lately and wondering if I'm missing out by sticking with S1 Pro. Saw this on 91wheels, Ather 450X tops out near 90 kmph while our Pro Gen 3 claims a much higher top speed. On paper looks like no contest for cruising but Ather riders swear by stability and heat management at speed. Anyone actually ridden both back to back on highway? Does that speed gap actually translate to real comfort or is it just spec sheet talk.