My Mamba and MX518 disagree with this silly list.
No, the Mamba is actually placed correctly on that list. It's a heavier, less reliable and more expensive version of the Deathadder with a ****ty sensor. Getting the Mamba when you could get a DA is just dumb, I should know because I own a Mamba.
What are you basing your judgement off, the old Mamba, or the Mamba 4G? The sensor has worked 100% flawlessly for me on my 4G. Also the ability to use it wired OR wireless is a huge benefit (zero drag when using it wireless)
Not so dumb afterall.
If you absolutely need a wireless DA, sure, but there are better options for wireless mice(although this really depends on how you want to charge it).
The 4G sensor isn't as bad as the PTE, but it's still not as good as the normal DA sensor.
And they use a custom battery, meaning you can't upgrade them yourself and keep spares for swapping. Although I'll admit that the battery doesn't mess with weight distribution as much as it does on something like the G700s.
edit:
Don't get me wrong; the Mamba probably works just fine and doesn't give you any trouble, and it's ok to like it, but there are a number of reasons why it's not a very good mouse and a bad purchase.
That shouldn't stop you though. One of my all-time favourite mice is the RAT7, which is probably even worse than the Mamba, and I can't in good faith recommend it to people off the bat. I still love it, and it's still one of my favourites and I don't regret getting it at all.