Their whole campaign is based on "The BT Smart Hub provides the UK’s most
powerful wi-fi
signal"
And yet that "Marketing claims substantiation" states "What do we measure?" => "The most important aspect of wi-fi for customers is their Transmission Control Protocol (TCP) throughput. "
Every metric quoted in that document is throughput. This purported "most powerful signal" is never mentioned r.e. ERP/RSSI and hence appears not to be a measured metric for this claim.
If I made AA NiMH batteries for a living, and I advertised it was the "most powerful" battery for it's type, I would get slapped if the mAh rate was lower than competitors products, because "power" in the context of a battery = electrical power. Likewise, for an RF device, power = ERP, yet here we have a "most powerful signal" claim for a RF device, and the "substantiation" avoids this metric like the plague.
I am not knocking the product - it could well be a very efficient device - I just have a pet hate for marketing that leaps on buzz phrases without appearing to substantiate their claims properly