lead to - to begin a process that causes something to happen Eg: There is no doubt that stress can lead to physical illness. A process of negotiation leading to a peaceful settlement. result in to achieve something; to bring about something; Eg: I hope that this will result in the police finding your car. All my effort resulted in nothing at all. It depends upon the situation Sanya.

The difference is slight. The expression "lead to" means to produce. "His mother's death led to a change in his behavior". When "result" is followed by "in", it introduces the idea of consequences. "The passage of this law will result in evil". The implication is stronger, in my opinion, like an event springing directly from facts.