So using the tool you have just supplied it states 945 movies listed by ticking All and Sky Movies. That sounds about right to me. So therefore there should be 945 SD movies through on demand through TiVo and 945 HD movies through on demand through TiVo.
The tool you have shown does not show a split in quality as it only shows the online quality which I am guessing is SD.
If you look at the HD section it is empty in comparison to the SD equivalent. I posted in the other thread about this showing approx. 10 films for HD and about 50 in SD for the same letter of the alphabet. This is not how it used to be there used to be hundreds in total like SD. It's like there's only 20% of the movies available in HD