Obviously, the opening bid of $900K wasn't enough as evidenced by the final result. The tactic of using a high intitial bid sounded like it had the desired effect, of knocking out those less financed buyers early on. As Michael has already mentioned, confident bidding can work well, especially when a limit has been definitely decided beforehand.
Home buyers can become emotional and overpay in any market, regardless of what information they have access to, including comparable sales and current market conditions.
Having had a recent client myself in this area, I know the particular street and can appreciate the fact that such a large block of land for a 1900 built character semi like this (422sqm) would have attracted a lot of interest. A very modern rebuilt house a few doors down, and on a much smaller block
(263sqm) managed to achieve a sale price of some $1.2mil recently so who's to say the reserve wasn't perhaps a little too low in the first place?