I always include the brand name where I can, but if it is too long because of that I do not hesitate to drop the brand name.

For the titles, whilst I think about it from an SEO perspective, it is also important to think of it from a CTR perspective too.  Sometimes you need that extra bit of description at the expense of the brand name.  To give an example, on some articles I find it better to put the month and year at the end instead of the brand name to increase CTR.  So basically, no I don't think it particularly matters, but it will vary on a case by case basis.

Aman,... well what you are doing is creating thin pages which over time might just risk a Panda Penalty.  You might want to at least no-index those blog pages.

Why not just use rel canonical?

Why are your blog pages, just an image of a photocopy of someone elses article.  You realise Google can't read the text from Images for SEO purposes right?

Are you able to share a link to the page in question?