You can take a high quality steak, the finest potatoes and whatever else you need, but allow a s**t chef to cook it and it'll be wank whatever beer you select.
Truth is that's the issue with the chink stuff.... A Kawasaki pump is fine and so is a yanmar engine but if it's thrown together badly it'll be crap.
That's before we get into the subject of undersized pumps/drives/engines for weight class etc.
I rated the Sany at Plantworx.... BUT look at the market penetration and dealer backup a few years on.... as for the others... Detank Pfft
Luigong are apparently very good but the reversing camera screen doesn't get netflix like a Komatsu