While VsTank Pro and Marui has pretty nice looking paint, Hen Long suffers from this problem. In this section we'll also cover the details on the tank as well.
Here are the differences for the M1A2 Abrams:
Spray painting involves multiple levels of spraying. For example, if you are painting an NTC camouflage tank with desert yellow as the major color, you'll spray the yellow first, then the other two colors one after another when the yellow paint drys. This is probably slightly offtopic however - the main reason I mentioned this is because at some areas, you can two colors of paint crossed over with each other. Some even had a 'hole' in between camouflage colors, where the 'hole' is the base color of the tank. A picture should be more than sufficient to show what I mean.
When it comes to painting realism VsTank Pro and Marui are at least, much better than Hen Long. Take for example the cargo rack of the M1A2 Abrams. While VsTank Pro and Marui has the camouflage paint on the rack, following the tanks' own camouflage pattern. Hen Long ditched this bit of detail and used a plain yellow rack instead. Also note that the rope has a yellow color under the rack as well.
Hen Long, at the front of its tank, has its camouflage paint cut off since they are using different a different plastic component. Here's a picture of what I mean:
The periscope next to the cannon barrel is unrealistic on the Hen Long as well, and you can immediately tell that it's a Hen Long tank. There's a bit of glue at the
end of the periscope.
Here are the differences for the Leopard2 A5:
On the Leopard2 A5 of Hen Long you can even find the front lights to be unrealistic as well, and the back lights are installed separately at the tank's rear. VsTank Pro has working front and back lights while Marui does not have working lights.
The Hen Long Leopard2 A5 doesn't even have working side panel armors which are present on the VsTank Pro and Marui versions. To Leopard2 fans, this has lost a lot of luster to tank enthusiasts.
The VsTank Pro Leopard2 A5 features a 'MILES II training system' accessory which can be put on its turret. The Hen Long and Marui Leopard2 A5 does not have this feature. However, the Marui Leopard2 A6 does have this accessory but it is stuck on the tank already.
VsTank Pro also has increased details as well. For example, the tools under the turret are all painted with correct colors.
Also, the added details on the smoke grenade launchers at the side of the turret.
On the whole, the looks of the Hen Long tank pales in comparison to the VsTank Pro and Marui counterparts.