Yes, the implication of a later date is that the French would be better equiped.
More Dewotine fighters should be available, and better light & medium bombers, plus US imports could have arrived in time.
However, would the French have the right appreciation of how to use them effectively. Recommend reading the Forgotten Air Force, regarding the attitude and competence of the French Air Force officers.
Also, the British position would have been better, with the BEF being better equiped. It would also mean, that once France is defeated - there is no time left - to have a Battle of Britain!!