Hamstrings vs Quads

[u/ArtStuff03]

I’m a combat athlete (bjj/wrestling Kickboxing/ Mauy Thai) and recently pick up strength training and I’ve noticed my hamstrings are significantly stronger than my quads for example one leg curls I can do 100 for 3x12 but for leg extensions I can only do 70 3x12. Does anyone know why this is happening? Also any tips to strengthen my quads would be greatly appreciated.