XFinity says I am not getting speed because of my router

[smbaligh]

Not getting enough speed, I have a 100Mbps connection and I only get 25-30Mbps, Although this is Xifnity certified router but based on my call with XFinity earlier today, Net Gear routers are not good, Since I haven't bought it from them I should get one from them.

My question is why does Net Gear sell these bad routers?

[plemans]

Are you testing wireless or wired into the router? 

What device are you using for testing? 

Do you have a screen snip of the cable connections page and the modem event logs?

[smbaligh]

I am testing it on wireless (WiFi)

Testing speed on my MacBook Pro

I am not sure how can I get it, Can you share any link I can follow to get the logs?

[plemans]

Test it wired. 

The C3000 isn't dual band. And 2.4ghz is a slow network and its sensitive to inteference. 

Its the reason for dual band routers. In this day, I don't recommend single band routers unless you live in the country with no one around and you're using dialup/dsl.