The first table appears to be what is referred to as the "polars" for the boat in question. It shows the the boat speed you can expect to achieve at a given windspeed (listed across the top) and a given relative true wind angle (the first column on the left.)
The second and third tables appear to show optimal upwind and downwind sailing angles for maximizing Velocity Made Good (VMG) for a given windspeed.
Compare these to the similar tables for your current boat to see how their performance differs.
I vote for a shower.