I wouldn’t tell anyone who rates Xavi over Modric that they are wrong, but the same applies for putting Modric above Xavi tbh.
Because the arguments are absolutely there for picking one over the other.
What Xavi has going for him is his peak between 2008-2012 (could put 2013 but I think that is when he started slowing down). And a lot of comments on how he was the system.
Without taking anything away from Xavi, I do think he benefitted greatly from playing for Pep. Yes he was fantastic and made it work for both Barca and Spain, but I really think there is also this added factor of Pep building one of the greatest teams of all time, playing football unlike anything before.
And with this in mind, Modric never really had the benefit of playing under a manager like Pep. Joined a third year Mourinho Madrid, followed by two years of Ancelotti, couple months of Benitez, 5y Zidane with Lopetegui/Solari in there as well. None of them managers like Guardiola who impose their will on the opponent. Not to say it was all terrible, but just trying to put in context when people say; “he never dominated games like Xavi!”.
Which I’d argue just isn’t really true but also point to the context of the managers and teams they played for.
Xavi and Iniesta are certainly better than Modric at certain aspects of the game. Iniesta dribbling in the final third especially, so easy on the eye. Or Xavi temporising the game unlike any other. But overall I do think Modric has the same qualities, some of which not to the same standard, but also more to his arsenal and being better at certain kther aspects.