How to Get EASY NUKES in Modern Warfare!! (In Description)

There are 2 types of Nukes in the new MW.that being a Defcon Nuke and a Tactical Nuke,
A Defcon nuke is a tactical nuke but it is called automatically if one team holds all flags in ground war for ~1 minute. it is called in as a mercy kill for the losing team.

A Tactical Nuke is a special kill-streak that is earned from a 30 player gun streak. when it is called in it kills everyone and wins the game regardless of score.

In MW there is a perk called point-man (red) That turns kill-streaks into score-streaks.
It appears that point-man is glitched and for some reason counts tank kills as regular gun kills which count towards the Tactical Nuke

I'm not entirely sure how it works but i think the Nuke is earned by doing either-
killing people while in a tank with point-man equipped adds to your nuke OR
Earn score 3750 points in one life with point-man equipped
(I'm basing this off the fact that the Juggernaut is a 15 Player kill-streak or by earning 1875 score with point-man.)

Also you should know that point-man does not give the same amount of points
as experience Example being
1) Capturing a hostile flag in ground war gives 300 EXP but only 200 Points towards kill-streaks
2) Destroying a UAV, C-UAV or a personal radar gives 100 EXP but only gives 75 Points towards kill-streaks