100 fruits shouldn’t be disappointing, considering your zone. Your trees should bear more densely as the laterals thicken. First year laterals usually only have two fruiting stems per node, while older laterals will have thicker and longer nodes( spurs) and will produce more fruiting stems per node.
i’d predict massandra will have better quality fruits there than here. My massandra already ripened and were ok, considering our several consecutive >110F days.
we recently posted photo links of massandra and other soviet bloc jujus at our webpage
also just added photo links of Korean juju cultivars