In terms of h2h, Manchester United facing Tottenham is actually not too good where in the last 5 matches even Mancheester United can only win 1 draw and 4 defeats so what makes Manchester United a better club than Tottenham at the moment?

I don't feel that Mancechster United are superior to the current conditions even though their chance to win is clearly very much there because indeed maybe the consideration is to the big name and previous experience but that does not guarantee now because everything can still happen including in the race for the trophy this time.
Man, sorry but h2h doesn't matter in european competition. I remind you when Chelsea often lost to the Arsenal in the league, but they won UEL by beating Arsenal 4-1. I'm stick in the same scenario that happened to the Manchester United.
Their performance is crap in the league, and can be considered as the worst. However, they have equal chance to win UEL or a bit higher.
We know so well the history of MU in european competition. I'd not judge them based on their h2h against Tottenham. Better to stick on the reality to happen soon.
I still have my trust for MU, though people underrated them at this moment. They have enough prep to face Tottenham.
Betting on them still giving us sense odds.
Indeed, such things seem unimportant because all conditions depend on how the game scheme and performance on the field but that means the same thing when we talk about excellence we cannot say that Manchester United is very favored because their strength is greater because in fact we can see that their conditions are the same even Mancehster United seems to always lose to Tottenham in the end.
The Europa League is full of surprises but that does not mean we can also forget about statistics and h2h especially in the last few matches this season when the same 2 clubs played again. I realize that statistics and h2h do not make them immediately win but in the end with this condition there is at least a greater confidence for Tottenham because they do know what to do.
There could be a similar condition where the match is unexpected just like before where when the club that is not too seen as a favorite can actually win as happened in the last few seasons in the Europa League.
At the moment the advantage of Manchester United is just a bigger name than Tottenham but in terms of performance, play and schemes on the field they are not bigger and may even be quite balanced with Tottenham for now.