Pajeets are dumb but they're apparently willing to die for their shitty country or at least for their fellow soldiers. Bugpeople are not. Also the pajeet army is worse on paper but it's set up to handle an actual war against the pakis as that's been a serious threat for decades while the PLA is mostly a glorified police force more worried about internal troubles and potential coups so logistically it's going to be weaker. Plus once combat starts getting real no high-ranking Chinese commander will want to risk committing their troops to a potentially losing battle because they'd lose face in any inevitable post-war round of executions and blaming sessions: it's a classic pattern in history for them to be more worried with infighting and personal reputation than with the war. Pajeets more or less have a semblance of rule of law they inherited from the Raj so broadly speaking random punishment is less likely. I mean maybe being posted to a shithole as a scapegoat for sure but that's very different from being shot by order of glorious leader pooh and having your family thrown into a re-education camp.
Pajeets will win a long conflict or full on conventional war for these reasons but bugs will win a short, sharp engagement or border conflict because they're better equipped and better at going in with a defined political goal while being hyper aggressive with human lives. Given that this is a fairly transparent attempt to distract the population from the coronavirus stuff as is the push in Hong Kong they could have just used the lull in the protests corona has caused to back off and save face but it's more valuable to have it in the news right now
a short border conflict is exactly what they want too as there's no real military or strategic goal to achieve. Also if they can strike hard enough in the opening moments they can maybe cause a governmental crisis for the pajeets and win that way. Of course in the highly unlikely event it goes to a full on war what Russia and Pakistan do will also be interesting and pretty influential. Pakistan is chink aligned and is far more likely to actually get involved militarily than Russia (pajeet aligned) is.
One thing the bugs would get from a long war though is a way to remove some of their surplus male population. The one child policy has left them with a huge gender imbalance and corona will leave them with major unemployment too. In history the one thing that causes revolution more than anything else is angry young men who can see they don't have a future and no job + no family prospects is what I'd call a pretty bleak outlook.
Figuring into what I said above apparently it's come out the chinks lost ~35 dead including their CO so it looks like the bugpeople nature as expected means no ability to work together if it's a risk to yourself.