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When searching a brand name that brand's Google+ page has been known to show. If you are looking to replicate this you will need to optimise your Google+ page for the knowledge graph and have a unique brand name. More info on this can be found by searching the Q&As for similar questions.
You've also got to imagine that would be pointless from an end user perspective.
Whilst it is important to get your ordering correct and use appropriate h1,h2 etc tags relevant to their page position - it is not an issue to style these tags in whatever way you like.
If you want to you could have your first one be a h1 and style it like a h2 and your second be a h2 and style it like a h1 - that's all fine.
What is bad is to have your first one a h2 and style it like a h1 and so forth.
No google will not punish Wordpress sites specifically. The Yoast SEO pluggin for Wordpress is a great way to help manage your Wordpress SEO if you have not already heard of it I would check it out. The chap who made it is also full of excellent advice.
Rack space/ slicehost for top end, also heard good things about brightbox (uk)
Check out my new site at ? Add the link to his Google place page?