Note that H₂ boils around 20-30K (depending on pressure). Once you take into account the weight of the insulated tanks, liquid H₂ is going to have much worse energy density.
Liquid storage I believe typically gets up to about 20wt%, so you're talking around 7.8kWh/kg. Compressed storage is around 6–10wt%, so up to 3.9kWh/kg.
