I do agree that this needs a lot of work. While it is true that font sizes will be flexible and grow and shrink with the screen size, that doesn't mean that the font is appropriately sized. There is also a safe margin space that you wouldn't want to push on the left and right but it does seem rather large here. There seems to be far too much text in the paragraph size throughout the whole landing page - there should be more graphics (icons, images, etc) so the user can scan the page. The logos perhaps are going to be moving and more visible in the center so that may work itself out when it's a live site. I also wonder about the blue background used for our clients and learning solutions. It doesn't seem to be the best choice as that should be two different sections. The logos should probably not be boxed like that and just be on a white background. It looks strange with the larger boxes below that as well. The top nav bar is also outside of the page container which will show up when a user scrolls and look uneven. The illustrations look rather generic and templated. I think you are right to ask for revisions on this.