Actually, it's considerably different; at least in terms of the delegation of executive power.
And probably more stable than the American model.
Not really. Most Presidents(in Europe anyway) are figureheads, with the head of government - PM, Chancellor, what have you - being the real power.
Anyway.
===Quebecois Civil War===
PUB deploys 15 armies, 200 ships, and 100 air wings to fight the Quebecois rebels.
Quebec throws 303 vessels at the rebels. The rebels boast 326 of their own.
PUB's forces emerge victorious! They sink 126 British ships and 188 government ships. All rebel ships sunk.
The death toll stands at 652,000 rebel soldiers, 376,000 government soldiers, and 252,000 British soldiers.
With British troops stationed in Quebec, the combined RAF and QAF go against the rebel air wings.
British victory. 43 British air wings and 131 government air wings shot down. All 200 rebel air wings shot down.
In the ensuing carnage, free Quebec's army is destroyed by bombardment. 60,000 civilians perish.
Death toll stands at 338,000 British soldiers, 638,000 government soldiers, 1,112,000 rebel soldiers, 220,000 civilians.
Thanks to PUB's quick actions, a much costlier civil war was prevented. It is revealed the Lancers financed the uprising.
===NCSA Civil War===
The 501st sends 90 ships to destroy the NCSA fleet. They are repelled. All 501st ships are sunk, as are 119 NCSA ships.
Fortunately, the rebels still have one advantage - the rebel air armada.
86 501st air wings fly wing to wing with 452 rebels. Success! All 250 government air wings shot down. 36 501st air wings shot down; 131 rebel air wings shot down.
50 501st air wings and 300 rebel air wings commence bombardment. 80 attempts later, the NCSA military is destroyed. The death toll stands at 256,000 501st, 908,000 NCSA, 280,000 rebels; 430,000 civilians. The soldiers shoot down 2 501st air wings and 9 rebel air wings.
The rebels seize control of the government with the aid of 501st ground troopers. They pledge allegiance to the 501st and vow to support them in their own civil war.
===Hungarian Civil War===
Rather than waste blood, Italy just deploys a spy brigade to coup the rebels to its side.
The spies are successful. The rebel government is liquidated and a pro-unification one put in power. The Hungarian Civil War ends without a single shot fired besides the first.