When people/women get to know the Pakistani men, they do like them. From distance still there are differences.
Since you asked, let me try to write down: Must tell you these are not universal or globally applied.
1- Height. Pakistani are taller in general.
2- Skin tone and color- Pakistani are more fair skinned,Pinkish lips/cheeks with sharp features. Comes from northern hemisphere. Indian skin tone is relatively dull/sullen. (Now, people from Punjab, Pakhtoonkhwa are mush more fair skinned, you may even find blond, blue eyed, very fair skinned people from Northern Pakistan. Some sikhs who shave and are from Indian Punjab do look like Pakistani.
3- Dressing: Pakistani are more trendy and Indian are more plain clothed or very different color choices. Pakistani spend more money and time on dressing or trendy items. Anyone can spot Indian women dressing from distance.
4- Gait/hand gesture. Indian do walk differently. Indian stay more still, while Pakistani use hand gesture more.
5- Facial expressions: Indian do “head bobbing” when engaged in talking with someone.
6- Emotional reactions like more flamboyant, revealing and full of expression are Pakistani men and more deep and unrevealing are Indian men.
7- Accent: If from US, Indian still speak more in British accent (Indian FOB’s/FOP’s). If US born then there may not be appreciable difference. Indian try to speak more proper English with less slang words but Pakistani do.
8- Hair style: Indian have straight cut hair or at times more careless about facial/nasal hair. Pakistani men try to groom themselves better.
9- Content: Indian use words carefully in their conversation more than Pakistani who are carefree and less political/diplomatic.
I am surprised you cannot tell difference. That’s okay though. 
Now you mentioned about celebs: The selection of celebs in Pakistan is not organized and based on other criteria than qualities. No real schools. Religious reasons also hold people of good looks to go in to show-biz. It’s not like beauty is not there in Pakistan. Pakistani women do not go out in to world for beauty competition commonly either.