There is no need to compare now Real Madrid, which had the opportunity to strengthen the team in the summer, and Barcelona, which spent the entire season without new transfers and, in addition, some important players, like Dembele, left the team.
Real Madrid's financial situation is much better, so they look better this season, Barcelona in a sense is trying to survive, I'm talking about finances, and in such conditions putting pressure on Xavi was a mistake. I’m almost sure that without Xavi it will be even more difficult for Barcelona, but now nothing can be done, they need to look for a way out of this situation.
Real Madrid has better financial current condition than Barcelona after facing financial crisis more than last several season but Xavi Hernandez success won La Liga tittle last season. I agree with you how Barcelona's management putting Xavi Hernandez on huge pressure without giving much money for signing new players and management huge expected with Barcelona winning La Liga and UEFA Champion League tittle. Its main problem not comparison between how much money spending by management and their target keep impressive performance make Xavi Hernandez announced for leaving Barcelona next season.
I don't know for next manager will be success like Xavi without get much money for signing players but management huge target for winning La Liga trophy.