Torch - Laser has a superior edge quality and tighter tolerances. ( 63 RMS & +/-.005 ) but torch can go through thicker material.
Plasma - Laser has a superior edge quality and tighter tolerances.
Waterjet - Laser is faster, with a superior edge quality and tighter tolerance, but waterjet can go through thicker material.
Wire EDM - Laser is much faster but Wire EDM can hold closer tolerances and go through thicker parts.
Bottom Line - If a laser can do the job, it will be more cost-effective than any other process.