Well you're somewhat correct. These are two different category bikes and there's no comparison really, but phr b ik comparison dono ki performance pe to bnta hai
I just came back having ridden the Wego150 for about 15 kms. Being 150 it hits 0-60 a bit quicker than YBZ which is an obvious thing, but apart from that the seat is much softer than YBZ but it's not wide enough and I got abit tired after riding. The suspension is as good as YBZ, road grip is a bit better in Wego because of its weight. The gear shifting is hard and it gets stuck sometimes while shifting, which I hope will be fine with time. The headlight is good, dipper is there, engine kill switch, digital speedometer, alloy rims, disc brake provide good experience. One thing I noticed, the drum brake at front in YBZ is really superb and close to a disc brake in Wego, obviously disc is more powerful but YBZ is not far behind.
I saw a YBZ in a showroom today which had alloys and disc installed, the guy at the showroom told me it was installed for 18,000 rupees on a customer's demand. Dipper and remote start system was also installed in that bike.