Speedtest is irrelevant, what matters is what you can get in practical application. For example I get between 80 and 90 Mbit/s download speeds on speedtest and I get between 8 and 10 Mbyte/s download speeds in Steam, between 13 and 15 Mbyte/s in Origin and 8 Mbyte/s from most websites. The only times it's lower than those speeds is when the servers are taking a stuff.
It's all about real-world application and stability of application, yo.