think luck certainly was against him- you had the likes of Kuszscak, Ward, Upson, Ulloa, Andrews, Orlandi, Lopez, Buckley from the previous campaign all leave that summer....all senior pro's and a lot of quality that Garcia had (although he had a lot of injury problems in the squad of course) that weren't available to Hyypia.
For whatever reason the recruitment team had an absolute nightmare that summer as well. Some really poor/ill fitting players. Stockdale ended up being a success but took a while to really get going, Aaron Hughes was (I suspect) supposed to replace Upson but was nowhere near as good. Joe Bennett has ended up having a good career but that season wasn't up to what Hyypia was demanding of his full backs at the time (and wasn't as good as Ward), Gardner was a very poor signing, McCourt was great fun but in reality wasn't very good, then you have the strikers- Colunga, Baldock and O'Grady. Baldock of course, ended up working out but had a stop/start season, Colunga was ultimately too similar to Baldock and struggled physically and O'Grady was never going to score many. Teixeira was the only signing that worked that summer and I'm not sure how much of that was Hyypias fault
Hyypia was also a young manager who tried to get an experienced number two to help him (Sammy Lee) who ended up letting him down not long before the season started
Don't get me wrong, Hyypia really struggled and some of his decision making was poor, but I wonder what would have happened if he'd had a bit more help
I posted similar on another thread. The club were making efforts to comply with FFP (before everyone realised that no-one actually gave a ****). We needed to balance the books