Hey man, first off congratulations to you and your wife on the new addition to your family!
Great report! I think what got you here was surging your wagons a little too close to his wraithlords on turn two, that wraith lord assaulting you really hurt. Really though without his tremendous luck at knocking out both wagons I feel you would have over run him. I would chalk it up to dice here, your evil suns being bogged down so majorly and failing all those tests really are just too many bad luck calls to blame your list
IMO. I was shocked that his
WL also hit the flier on turn three or four despite not penning! His dice were obviously hot, how else can you explain guardian JB winning an assault over orks