Yes, it is different.
With WR2, despite it having a dyneema cover, all the load is on the core
. . . . So you have to use one of the core
dependent splices - different from the splice you use for Dacron double braid (where the load is split between the core and cover).
With WR2 there are two options . . . . (1) Simply strip the cover off the ends and do a single
braid splice on the ends. This is a very very easy splice but does expose the ends to uv and chafe. Or (2) use one of the double braid core dependent splices (See page 11 here just for one set of instructions). This is a more difficult splice, especially in WR2 which has a quite tight and stiff cover, but does protect the ends.
With either splice there is going to be quite a bit of constructional stretch after you load up the line the first couple times. There is also going to be long term "creep" - you appear to have sized the line to match the Wire strength. Usually it is sized bigger to reduce the amount of creep.