It does NOT prove your point at all. If you go thru the report you will find that this component (labled quality of overall infra) is for all other infrastructure except roads, rails, ports, airports, telecom and electricity and is not a total of the same. Its more like Misc infra.
Please look at your data again. Not just overall, but in specific categories like roads, ports, etc, Pak is ranked higher. OTOH, India has a clear edge in railroads in WEF data, which accounts for the biggest difference in overall rank.
WEF Lists the following for the source on this..
SOURCE: International Telecommunication Union, World Telecommunication Indicators (June 2009 update); national sources
Here are my data sources showing Pakistan's higher levels of mobile phone and internet penetration in South Asia:
Bangladesh ranks low in South Asia mobile use : Dhaka Mirror
Asia Internet Usage Stats and Population Statistics
International Telecommunication Union - BDT