People seem to forgot that Sentinel agents are not exclusively defensive agents. Unlike Killjoy and Cypher who can set up their utilities on site and watch a large area with Turret and Spycam, Deadlock's abilities are all movement restriction
GravNet (C): "Forced crouch when caught" prevents rushes, strafing, and peeking, although it makes them shoot more accurately by accident. Hold F to remove the net, mechanically similar to Cypher's Spycam or Sova's Owl Drone pings, means you have to hide or move away. Can catch multiple players. The net is mechanically similar to Fade's Seize, where you can teleport your way out when using Yoru, Omen, Chamber or Reyna's Dismiss, but not others like Jett's Tailwind or Raze's Blast Pack. Since it's a grenade, Kay/O's Frag/Ment lineups can be potentially used. I can see that this ability has two charges, ie can be purchased twice, like Sage's Slow Orb.
Sonic Sensor (Q): Mechanically similar to Killjoy's Alarmbot and Chamber's Trademark with two differences. One is that it concusses so shooting is not accurate and no ADS. Two is that it is indestructible, as in you cannot destroy it as it won't be revealed when you are near the edge of detection. Easily counterable if you walk, not shooting, and not using your abilities the whole round. Place it near plant location and enemy will be concussed while planting. The first ever ability to utilize sound as its mechanic. Most probably only one charge.
Barrier Mesh (E): Blocks players' movement, both you and enemies, like Sage's barrier orb but can shoot through it (mechanically opposite to Harbor's Cove where you can go through it but not bullets). The main node and 4 outer nodes are destructible to remove the barrier, where the main node has a higher HP. Destroying the main node removes all barrier while destroying the outer node will remove only the connected barrier. Barrier Mesh's location is key to not be destroyed immediately.
Annihilation (X): 1v1 guaranteed win. The abilities basically detains you to your doom. The nanowire pulse seems to be reflective to reach your target and not going through walls. The speed of the cocoon seems to be the running speed, not walking speed. Seems like a lot of HP. Yes, it's all "seems". Most likely 7 ult points needed, not 8, not 6
To compare with other Sentinel agents, Deadlock's abilities to restrict movement is great for stalling the enemies so your teammates can rotate. Since she restricts movement, pairing her abilities with damaging utils is powerful. She is more defensive against site executes and retakes. She would be great in maps with tight chokepoints like Bind.
(Credit to Valorant Updates on Twitter)