You can safely expect the same performance in Wordpress as you do exported as HTML5 on your computer.
No jaggies, no pixels, 100% vector (if you are using the vector, pencil, or shape tools). When you export a oam widget, you’re exporting the full CSS, JS, and HTML that would normally get in a HTML5 export but it is zipped up in a package that is easy to upload to Wordpress as a single file.
Using your plugin and Hype Pro Version 4.0.3 (664)
For some yet unknown reason .oam export either shows jagged pixel preview type on display or it don´t show anything at all. Animation is super simple. Just few vectors directly from Illustrator pdf and animated one line vector turned to symbol. Animation works fien in hype but does not import to WP.
Tried with both div and iframe. Tried to save document and export animation several times. Only first attempt showed anything.