the source of this is here if you want to try for your self

http://speedtest.net/global.php?continent=4&country=21

While going through the site there were some really amazing things there are some ISPs listed there which i have never heard before (though i have lived in Islamabad/Rawalpindi, Lahore and Karachi). There are some un known ISPs there with some pretty huge data rates, my guess is they are some corporate ISPs providing services to businesses only.

I have compiled and captured some data which i am showing here from the source site, but you can go ahead and test your results, also if you know some of these ISPs do let us know.

Please remember to take these stats with a pinch of salt, as these are only a collection of tests visitors of the website provide, so there is a strong possibility that some customers of popular ISPs is not there because the minimum number of tests to form a graph (100 for a region and 25 for a city ) have not been performed, but it is an interesting read.
Click the more link for the detailed analysis

Here it goes

Pakistan

for whole of Pakistan the broad band speed for different ISPs their maximum speed rates achieved and the comparison of different regions according to their speed is as follows

The upload speeds for Pakistan are as follows

Regions (Provinces in Pakistan)

For different provinces of Pakistan the comparison of different ISPs available and their maximum possible data rates are presented in the following figures,Also presented is comparison of different cities in each province (Region) . (For some weird reason Islamabad is included in Sindh so ignore it)

and upload data is

For Punjab download data is

and upload data is

For NWFP The download data rates comparison is

and upload is

and for the province of Balochistan the download data is

and upload data is

Data for different cities is as follows

Karachi

Data rate for different ISPs for Karachi city and the maximum data rate they achieved are as follows

For downloads

for uploads

Lahore

Figures telling a comparison of ISPs and their maximum achieved data rates in the city of Lahore are as follows

for downloads

for uploads

Islamabad

Figures comparison different ISPs and their data rates in the city of Islamabad are as follows.

download speeds

upload speeds

Rawalpindi

Comparison of ISP and services providers for different broadband speeds in Rawalpindi city are as follows

for downloads

for uploads

Peshawar

For the city of Peshawar the comparison of different data speeds by different ISPs are as follows

download speeds

upload speeds

Quetta

Different data speeds from different ISPs in the city of Quetta are as follows

for downloads

for uploads