[loquax]

You might want to check this for yourself, but the above examples imo is contrary to Advertising Standard guidelines and you have a strong case to make a complaint to ASA who can then take action.

From The CAP Code - Detail

20.1 Although comparative claims are permitted, marketing communications that include comparisons with identifiable competitors and/or their products should not discredit or denigrate the products, trade marks, trade names, other distinguishing marks, activities or circumstances of competitors. Other marketing communications should not unfairly attack or discredit businesses or their products.

Might be worth making a few enquiries?

Jason