In regard to Watson, some strikers don't come to life until later in their career. Paul Furlong being a classic example. as he scored naf all at QPR that first season back there, then he came to life.
Maybe not, but Roy is very fast. And not all strikers need to be truly fast. For example, McLaren is probably not any faster than Watson, but seems to be often in the right place at the right time to be a real threat. Castro may not be superfast but is a real threat.
Looking forward, Smeltz may not have his old speed either. We may not have a fast team overall, so we need to win games on other points like better positional play and good individual skill.