If you read the question properly, it's basically "Was Emerson better than Souness when he was at his very best"
It reminds me of when Robbie Savage claimed that he was 'world class' at one point
Many footballers have moments of brilliance every now and then.
There are loads of clips where a bang average footballer shoots a 40 yd screamer into the top corner
But as many have said on this thread, the question is invalidated because the best footballers produce world class moments week in, week out
Souness did - Emerson didn't