BB Bold :: Maximum Upload/download Speeds?

I have a BB 9700 Bold. I was testing the data transfer speed of it using an app called "NetWorkSpeed" from the app store. No matter how fast my network connection was, it seemed like the Bold was capped at an average maximum speed of around 250 kbps, both uploads or downloads. This is using either a 3G connection, or my home Wi-Fi. My home Wi-Fi should be able to do 6000 kbps downloads, and 800 kbps uploads; but the Bold never got anywhere near those. Now this is a speed test only done to the device, not to a tethered computer or anything like that. A tethered computer seems to be able to transfer faster through the Bold than the Bold can transfer to itself. Is this a real limitation with the Bold, or is something else going on here?

BTW, I tethered my PC to my Bold, using the Bold as its modem, and I was able to get 1.9 Mbps/330 kbps with it. Not as fast as my home Wi-Fi, but respectable. But much, much faster than the Blackberry can transfer to itself.