Obviously BRV is a outcome of Honda Brio. And so is Toyota Rush a cheap product.
People saying it can compete against Vitara are comparing horses donkeys and zebras.
Terios or Rush are cheap products from toyota to cater the Indonesian Asian market. They might look good but they just serve the purpose.
In pictures the rush looks wider maybe seating is comfier. But still it cannot beat the comfort of Toyota premium product I.e Corolla.
Yes it might be par with Avanza, Yaris, Vios etc.