From what I've heard, there were a lot of fans who didn't like it, but frankly I don't believe them for a second. The 'hardcore' fans always nitpick the flaws and never really see the highlights of these sorts of things. Take Go-Busters for example - When it first came out, fans stated it was too much like Kamen Rider, now people are going nuts over it.
On a side note, I will admit that with the addition of Beat Buster and Stag Buster, it kinda is a little like Kamen Rider - If you've ever seen Kamen Rider Kabuto... Then you'll know what I mean. But in any case, I'm looking forward to the subs of that movie - But I'm really looking forward to the Fourze movie and Kamen Rider Wizardo - And they're still continuing with the number theme! Seriously, look up Kamen Rider Wizard and look at his belt - Its a five fingered hand lol!