Nuno has guided Wolves to successive seventh-placed finishes in the top flight after they had dominated in the Sky Bet Championship in a similar manner to Leeds last season.
"This shows or talks very well about the job they have done in their two seasons," Bielsa said.
"More than them having some new players they are incorporating into their team, they are a team that has consolidated in the league."
Wolves also reached the Europa League quarter-finals in August and have since added seven new players to their squad, including club-record £35.6million signing Fabio Silva and Portugal defender Nelson Semedo.
Bielsa said: "They have a system ingrained within their players, (who play) with a powerful competitiveness."