Only? 10 Tbps is HUGE capacity. Biggest IX (Internet Exchange) which is AMS-IX have 5 Tbps at peak. Whole internet traffic in 2016 was around 160 Tbps. So it seems right.
disclaimer: I work for a CDN, but am not representing them with this comment
Right, but this is talking about GLOBAL capacity, not at a single datacenter. The CDN I work for has over 49tbps, and we wouldn't claim to be doing 10% of all HTTP traffic:
Plus, capacity is always going to be greater than actual throughput, both for reliability reasons and traffic patterns (i.e. you need enough capacity for your peak traffic in a datacenter, not the average)
Of course capacity is always greater, average twice greater as that kind of deals you are taking from T1 providers. But depends how much commitment you have, what kind of deals and traffic patterns you are using. CF has 10 Tbps capacity but probably a lot less throughput, they need high capacity because they are DDOSed a lot.
I wasn't taking those numbers from nowhere. Read this:
