No, not sweet in my opinion at all. Thing is this is a great plant for the first time tomato grower. Or for a person that doesn't have a green thumb. Plant Juliets and you are pretty much guaranteed of success. And lots of tomatoes!!
Plants are vigorous, hardy, very resistant to diseases and crank out fruit like crazy. Never prone to Blossom End Rot or to cracking. Pretty much foolproof.
For best flavor harvest and let them get nice and ripe on your counter or windowstill.