If your only defense is population and poverty, you have a lot to learn; you're the definition of the modern age Abu Jahil.
Regardless of those two to three items you keep repeating, all other metrics that matter towards economic productivity shows Bangladesh is ahead of Pakistan. So the case is closed, and UN, IMF, WB, and other institutional data show they are ahead.
Bangladesh Healthcare, according to the British Medical Journal The Lancet, shows Bangladesh Healthcare Access and Quality (HAQ) index increased from 17.8 in 1990 to 47.6 in 2016, while Pakistan's HAQ index was 26.8 in 1990 while 37.6 in 2016. They even ranked better than India.
Bangladesh is ahead of India and Pakistan in healthcare access (newagebd.net)
Crowding not much can be done due to what they've got a smaller landmass as a country; however, they are investing in vertical infrastructure and population control that's a family planning issue, and we've seen Chinese control, and the effect it's now having they will not have enough children born for replacement purposes and same with Japan.
Their schools are better, and as for them coming to Pakistan, even Pakistanis are going there, so it makes no difference; it's a useless item to argue over.