Hi
If comparing against ORE testing, you need to keep it the same, ie laptop to laptop, hence presuming your laptop was windows.
Mobiles, tablets etc are devices which are not as powerful or able to process as fast as computers, and these devices are subject to certain conditions which can slow further, for instance, if power hitting a certain %, the wifi may be reduced to conserve power for longer life. Add to that the fact of battery memory, which is set in the first 10 charges/usage of the device when new, and the available power maybe shorter ie charge may hold for a period then drop dramatically
Kitz is correct in that the router maybe connected at the quoted speeds, but devices behind the router may have slower throughput of speed, but there are too many factors for this, some of the reasons as above, but other factors include website server loading, network congestion (between your connection and website) network loading etc, so if you check your router for it's connected speed, this is your correct connected speed, not your usable speed, which is fluid, and will fluctuate.
The last point I would like to make is, in reality, for most users the throughput speed is more then adequate for most services, from VoIP, streaming browsing etc, particularly at speeds your posting, and if browsing websites appear slow, it maybe the hosting server under load. Please do not compare website load times though, as some website performance use perception loading sequences, to make people believe it is loading faster.
I hope that helps and sorry if I am causing more confusion, there's more then 1 factor to consider.
Many thanks
John