Personally, I'd bet they're the exact same rent scale and if anything the Toy Factory lofts would cost a little more because they are conversion's (far more rare), and are in an (arguably) better situated neighbourhood (closer to galleries, Queen West, Lakeshore, Gardiner, quiet, and most importantly - a real grocery and liquor store!). There is very little rent difference between any newly built (last five year), decently finished/amenitied (sp?) 1 bed (600ft-ish)condo in the whole downtown core. From Yorkville to Queens Quay and the DVP to Dufferin. Depending on parking or no, all between $1400-1600/month unfurnished. Add 3-500 for furnishings.
As for Parc Lofts, all I can say is that I hope (but highly doubt) that the sales agents are being honest and are telling prospective buyers that they're less than a block and facing a pig slaugherhouse and their balconies, terraces and condos will be smelling horribly a good 5 times a week, all year round. Even at $300/ft, you couldn't get me to buy there!