Even Modi jee was charged with murder of thousands of innocents and banned to enter several nations including USA. But as the history suggests in South Asia, no sitting minister is ever charged let alone the Chief Minister and upon whatever accusations coming from his own ranks, he was still given clean chit after years of controversy thanks to his power
The major difference between him and Hafiz Saeed is that for Modi, his own people were accusing him of murder but for Hafiz Saeed there is no evidence or accusations from anybody except our neighbours who are famous for scripting bollywood style stories and accused him of conspiracy based on his speeches
Modi was charged and acquitted in 2012, two years before he was elected PM.
I don't know about Pakistan courts (not much left to say after recently watching Musharaf's proud boast on TV about getting Raheel influence courts to help him) but plenty of sitting ministers and MPs have been charged by Indian courts, some convicted. Jayalalitha, Shibu Soren, Lalu, Chautala, there's plenty of precedent - though not as much as I'd like. Modi's trial was in fact supervised by the Supreme Court which is a rival power centre not usually beholden to governments and the investigation was conducted by a team of cops who had a history of being victimised by Modi. The proceedings took place in an era during which the Congress ran the central government - I have no doubt that had there been the slightest chance it would have ensured he was convicted (for its own selfish reasons).
The riots were a reaction to another communal act - the burning of a railway coach with many hindus. Such riots are unsurprising in a polarised population and while Modi may well have done little to stop the reactions, he did not engineer the burning or the riot. At worst Indians can blame only themselves for electing him.
As for Hafiz Saeed, his speeches are hardly an issue - what is relevant is his role in the terrorist attacks.
Testimony of David Headly (held in the US) and evidence from the Mumbai terrorist attacks implicate Hafiz Saeed quite plainly. The US is after him because of the deaths of American citizens - and the Americans, unlike south asians are quite serious about hunting down perpetrators.
Here's the official state department notice for him - they don't issue these lightly. Before his capture and death Osama and many other worthies also shared space with Hafiz on this same page.
https://www.rewardsforjustice.net/english/hafiz_saeed.html
You may want to check his present company
https://www.rewardsforjustice.net/english/most-wanted/all-regions.html
Glorifying chaps like Hafiz and defending him is costing Pakistan quite dearly - not only internationally - but also in the domestic terrorist attacks - whose responsibility is claimed by violent groups who follow Hafiz's methodology.