Not at all. White could give away two kings and still have a winning position. If you put one on 50, one on 45, one on 39 and one on 34, you can always capture the black king, regardless of where it's positioned.
It is a draw because White was unable to find the winning move.
1 vs 4 kings is a theoretical win for the 4 kings. 1 vs 3 is mostly a theoretical draw. The game is drawn when both players make 25 consecutive king moves without capturing.
#4 Cool, 1 vs 4 could be interesting to learn.In this particular game 113. 15-4 seems the most beginner-friendly solution (113... 36-47 114. 43-49 47-36 115. 33-47).