I've seen a lot of people claiming to have had bad experiences with Razer products, but to be fair, you could find a lot of people claiming to have had bad experiences with almost any product.
If there is some actually statistics about Razer product failure rates I'd love to see them.
I don't have those statistics you want. What I do have is a lot of experience with razer products and every single one of them failed on me and/or were so uncomfortable to use they had to be replaced. I've also read a lot of user reviews on them and a lot the reviews had similar experiences to mine. I'm not going to go through the list of razer products I've owned as it's fairly long but I have owned their cheap and high end products and had issues with all of them. The worst part isn't that the items failed, it was their customer support who made me pay for shipping to replace a brand new $130 product that had widespread issues. The shipping came to $30, and it was even bought off the razer store. Which to be fair may have been my first mistake.
Just for the sake of argument, logitech products have all been exactly the opposite for me. All the logitech products I have owned are still working wonderfully to this day except for the grip that originally came with my G9, which the rubber coating came off. And I'm on my second G700. The first one had issues with double clicking randomly. They replaced it free of charge and with free over night shipping and didn't require me to send my original one to them.
I treat my periphs well, so it's not a question of mistreating them, because as I said my Logitech stuff is still fine. I don't currently own anymore razer products.