You forgot that if PSG was not barcelona. It's a different thing, even though PSG is now owning him as a coach for the club. Barcelona was still in the best form when it's still coached by him. You can't even compare it with PSG as either of clubs has a different basis.
You shall be aware that if barcelona can be considered as one of the strongest team in the world since a long time ago while PSG was looking strong only in its local league. PSG became a strong team once it has been acquired by khelaifi.
Comparing the time when Enrique was with Barcelona to the present era would not be a valid comparison. PSG needs to prove itself. UCL is not a competition which can be won easily.
It needs everything to win it. Look at how manchester city has spent so many years only to win UCL last season. PSG didn't have a strong basis like barcelona which has been supporting by its great academy in producing the great players.
Upon closer examination, it is evident that there are some incomparable aspects between Enrique's career at Barcelona and PSG.
I am of the same opinion and also Enrique comes from Spain and that can make a difference. I know that Zidane could be the counter example here because he is French and coached Real Madrid and they won three Champions league trophies with him, but it is still a little difference because Zidane is a Real Madrid icon himself, knows and loves the country and the people and speaks the language fluently. I don't think these factors are overwhelmingly important, but they can be of value for sure.
@asriloni it is so true that Barcelona was a different team. They were the best team in the world no matter who the coach is. They had the best midfield, the best strikers, the best Messi, everything the best. This is a totally different job for Enrique. He will probably win Ligue 1 because PSG always wins Ligue 1, but the Champions League will be more interesting.