```json
{
  "mtp_observation": "MTP-on runs exhibit speculative token generation, but verification overhead and memory bandwidth constraints can offset raw throughput gains.",
  "limitation": "Isolating MTP-on metrics without a baseline fails to capture the true overhead of the speculative decoding pipeline.",
  "metric_needed": "A true delta requires a matched MTP-off run to establish a baseline and accurately measure the net performance improvement."
}
```