Evaluate the following comparative definitions regarding the locus of sovereign power within democratic states:
1. The legislative body of India possesses absolute, unchecked sovereign authority structurally identical to the British Parliament.
2. The constitutional framework of India establishes a Republic led by an elected head, contrasting with Britain's hereditary monarchial head.
3. The philosophical architecture of the Indian state dictates that ultimate political sovereignty resides collectively with the populace, rather than a single ruler.