Not exactly, their tanks were better than the Germans in terms of armor and armament so could stop them on the defense and with frontal attacks.
When everything was going as the French expected them too, sure. When the French tried to turn them around and throw them into the actual key battles, though, the Fremch armor amounted to speed bumps at best for the Germans. The reasons for this had practically nothing to do with their tanks.
For example, the French 1e DCR arrived near Dinant on the night of 12 May. It then sat inactive all through 13 May while it's superiors tried to decide what to do with it before finally receiving its orders just before midnight. The staff of the 1e DCR then spent the next twelve hours on some rather poor staff work, trying to figure out a plan for their upcoming attack, before having to throw the whole thing out again when new orders arrived for the 15th. They were still trying to get themselves sorted out when Rommel rolled over them.
By comparison, consider Guderian's improvisation during the Sedan breakout. In response to the developing situation on 15 May, he dusted off a set of plans that had been drawn up during a staff exercise dealing with just this eventuality several months ago. His staff went over them, updated them, and issued them out. The whole process took them about two hours.
When things moved slower, and the French had time to build their response, and the Germans moved in a more predictable way, the French could put up a good fight, but once things moved off script and the Germans used their speed - of communications, planning and manuever - the French collapsed. It was a basic flaw in their glacial top-down system of command.
But remember to the French innovated the hedge-hog defense during the 1940 campaign to stop the Germans.
Weygand ad-hocced hedgehogs by necessity in June, and not out of true innovation, since he had to defend a front 1,000km long with only 65 divisions against a force of over 140 divisions and with vastly superior offensive potential. He had no way to maintain a continuous front and no way to prevent the Germans surrounding his units. While the hedgehogs gave the Germans some stiff fights, one thing needs to be made very clear: they were an admission of inevitable defeat. While tactically problematic as the hedghogs were they were wholly defensive and the Germans could just bypass and reduce them in time. Weygand's plan involved no chance of operational success, and he knew it. He was just giving the French Army one last hurrah before it called it quits.
Operationally they had issues with mobile warfare not adhering to a strict plan due to the lack of radios and having lost air superiority.
They had a lot more problems then that.